//
//  RootViewController.m
//
//  Created by YouXianMing on 14-5-16.
//  Copyright (c) 2014年 Y.X. All rights reserved.
//

#import "RootViewController.h"
#import "iCarousel.h"
#import "YXJSON.h"
#import "YXGCD.h"
#import "SDWebImage.h"// 数据源
#define SOURCE_DATA @"http://www.duitang.com/album/1733789/masn/p/0/50/"@interface RootViewController ()<iCarouselDataSource, iCarouselDelegate>@property (nonatomic, strong) iCarousel      *carousel;   // iCarousel
@property (nonatomic, strong) NSMutableArray *dataArray;  // 数据源@end@implementation RootViewController- (void)viewDidLoad
{[super viewDidLoad];// 初始化数据源_dataArray = [[NSMutableArray alloc] init];// 初始化iCarouselself.carousel = [[iCarousel alloc] initWithFrame:self.view.bounds];[self.view addSubview:_carousel];_carousel.backgroundColor = [UIColor blackColor];_carousel.type = iCarouselTypeWheel;// 设置代理self.carousel.delegate   = self;self.carousel.dataSource = self;// 异步加载数据[[GCDQueue globalQueue] execute:^{// 获取json数据NSData *data = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:SOURCE_DATA]];// 转换为字典NSDictionary *dataDic = [YXJSON dictionaryOrArrayWithJSONSData:data];if (dataDic){NSArray *dataArray = dataDic[@"data"][@"blogs"];for (NSDictionary *dic in dataArray){NSLog(@"%@", dic[@"isrc"]);// 存储数据[_dataArray addObject:dic[@"isrc"]];}}// 主线程更新[[GCDQueue mainQueue] execute:^{// 重新加载carousel
            [_carousel reloadData];}];}];
}#pragma mark -
#pragma mark iCarousel methods
- (NSUInteger)numberOfItemsInCarousel:(iCarousel *)carousel
{// 元素个数return [_dataArray count];
}- (UIView *)carousel:(iCarousel *)carouselviewForItemAtIndex:(NSUInteger)index      // view的标志reusingView:(UIView *)view         // 重用的view
{if (view == nil){view = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 300.0f, 400.0f)];}// 强行转换指针UIImageView *pointView = (UIImageView *)view;// 使用SDWebImage异步下载图片
    [pointView setImageWithURL:[NSURL URLWithString:_dataArray[index]]];// 图片自动适应pointView.contentMode = UIViewContentModeScaleAspectFit;return view;
}- (CGFloat)carousel:(iCarousel *)carouselvalueForOption:(iCarouselOption)optionwithDefault:(CGFloat)value
{if (option == iCarouselOptionSpacing){return value * 1.1f;}return value;
}@end